如何自定义Laravel注册表错误信息？

php artisan make:validator CustomValidator

public function rules()
{
    return [
        'name' => 'required',
        'email' => 'required|email|unique:users',
        'password' => 'required|min:6',
    ];
}

public function messages()
{
    return [
        'name.required' => '请填写姓名',
        'email.required' => '请填写邮箱',
        'email.email' => '请输入有效的邮箱地址',
        'email.unique' => '该邮箱已被注册',
        'password.required' => '请填写密码',
        'password.min' => '密码长度不能少于6个字符',
    ];
}

use App\Http\Validators\CustomValidator;

public function register(Request $request)
{
    $validator = Validator::make($request->all(), CustomValidator::rules(), CustomValidator::messages());

    if ($validator->fails()) {
        return redirect('register')
                    ->withErrors($validator)
                    ->withInput();
    }

    // 注册逻辑
}